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Introduction to Dart
course content

Course Content

Introduction to Dart

Introduction to Dart

1. First Acquaintance with Dart
About DartFirst ApplicationFunction print()CommentsBasic Math Operations
2. Variables and Data Types
Data TypesVariablesProperties of NumbersBool, Equality and Relational Operators
3. Conditional Statements
if Statementif...else Statementelse-if Statementswitch-sase Statement
4. List and String
ListIndexesStringWhat are Methods?String Properties and Methods
5. Loops
Introduction to Loopswhile-LoopsDo-whilefor-LoopsIncrement and DecrementBreak and Continue

Increment and Decrement

Increment

Increment operators are used to increase the value of a variable by 1.

Pre-increment operator: ++variable.

The pre-increment operator increments the value of the variable before it is used:

dart

main

copy

              
12345

            
void main() {
  int counter = 0;
  // Increases the value of `counter` by 1
  print(++counter); // 1
}

Post-increment operator: variable++.

The post-increment operator increments the value of the variable after it is used:

dart

main

copy

              
123456

            
void main() {
  int counter = 0;
  // Increases the value of `counter` by 1
  print(counter++); // 0
  print(counter); // 1
}

Decrement

Decrement operators are used to decrease the value of a variable by 1.

Pre-decrement operator: --variable:

dart

main

copy

              
12345

            
void main() {
  int counter = 10;
  // Decrease the value of `counter` by 1
  print(--counter); // 9
}

Post-decrement operator: variable--.

The post-decrement operator decrements the value of the variable after it is used:

dart

main

copy

              
123456

            
void main() {
  int counter = 10;
  // Decrease the value of `counter` by 1
  print(counter--); // 10
  print(counter); // 9
}

Increment and decrement operators are often used in loops.

This approach maintains the same functionality while reducing the amount of code we need to write.

i ++ is it ?

Select the correct answer

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Section 5. Chapter 5
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